package com.atguigu.cloudalibaba.controller;

import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.atguigu.cloudalibaba.blockHanders.ConsumerBlockHandler;
import com.atguigu.springcloud.entities.CommonResult;
import com.atguigu.springcloud.entities.Payment;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Author yangjin
 * @Description
 * @Date 2021/7/18/15:57
 **/
@RestController
public class RateLimitController {

    /**
     * 按资源名称限流
     * 配置了限流兜底方法，使用的是handleException进行限流处理
     * @return
     */
    @GetMapping("/byResource")
    @SentinelResource(value = "byResource",blockHandler = "handleException")
    public CommonResult byResource()
    {
        return new CommonResult(200,"按资源名称限流测试OK",new Payment(2020L,"serial001"));
    }
    public CommonResult handleException(BlockException exception)
    {
        return new CommonResult(444,exception.getClass().getCanonicalName()+"\t 服务不可用");
    }

    /**
     * 根据url进行限流
     * 如果被限流：使用的是sentinel默认的限流异常提示
     * @return
     */
    @GetMapping("/rateLimit/byUrl")
    @SentinelResource(value = "byUrl")
    public CommonResult byUrl()
    {
        return new CommonResult(200,"按url限流测试OK",new Payment(2020L,"serial002"));
    }

    /**
     * 自定义限流返回提示测试
     * @return
     */
    @GetMapping("/rateLimit/ConsumerBlockHandler")
    @SentinelResource(value = "ConsumerBlockHandler",blockHandlerClass = ConsumerBlockHandler.class,blockHandler = "handleException")
    public CommonResult ConsumerBlockHandler()
    {
        return new CommonResult(200,"自定义限流返回提示测试ok");
    }
}
